In January, a document called the Neufeld Memo reversed previous USCIS policy and determined that IT staffing firms are not ‘U.S. employers’ allegedly because they don’t exercise control over their consultants.

The employment agencies—New Fuzhou, Zhong Mei and Lucky—allegedly placed the workers in mainly restaurant jobs in South Carolina, Pennsylvania, Tennessee, Mississippi and Georgia, according to the U.S. Attorney’s Office.

Employers can improve the situation by encouraging social interaction among all workers and including temps in such things as formal and informal departmental lunches and holiday parties, according to the research.

What should you do when your employee lodges a complaint about a customer's behavior? It's a sensitive situation, but you should maintain control over certain procedures, such taking the complaint, reporting the complaint to the customer and making sure employee is provided with the necessary legal protections.

The businessmen allegedly hired illegal workers and paid their wages in cash without deducting payroll taxes or other withholdings, the Department of Justice reports. Their companies supplied workers for janitorial services, freight handling and other jobs.